Contingencies and Accrued Losses - Changes in Accrued Warranty Balances (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Commitments and Contingencies Disclosure [Abstract]
Beginning Balance		$ 12,651	$ 11,509	$ 11,776	$ 10,905
Deductions	[1]	(7,479)	(5,620)	(24,863)	(20,124)
Provision charged to expense		7,297	5,558	25,556	20,666
Ending Balance		$ 12,469	$ 11,447	$ 12,469	$ 11,447

[1] Primarily claims paid during the period.